Pec Injection of Quality Test E. causes coughin 7 days after pin-need advice, worried

[NiceGuyResearcher]

Title: Pec Injection of Quality Test E. causes coughin 7 days after pin-need advice, worried

This is not Tren. cough, because Tren cough goes away shortly after the injection is done

I have coughed before while pinning in the pecs, like 3-5 days later

Well the last time 7 days ago, there was a lump in the pec muscle, it went away when I took a hot shower and rubbed the area in a circular motion, because I don't have a working heating pad at the moment.
Please note: The cough is a mild one, goes away throughout the day with drinking lots of water and maybe a cough drop

Pro's:
1) Pecs are meaty, large muscle, can take 1 ml or 1.5 ml 2 cc's into the muscle
2) there aren't too many blood vessels in this area, and when I pin, the juice gets deposited in this area instead of wallow in free space and possibly turning into an infectious abcess
3) u can use 2 hands to inject and actually see the injection

Cons:
Others have said Pecs are far from ideal as a spot to injection intramuscular, why is that? Is it because they are too close to the lungs and the air pockets lining the lungs
I have coughed before while pinning in the pecs, the good thing is that there aren't too many blood vessels in this area, and when I pin, the juice gets deposited in this area

Background, side note:

I found the Pecs great especially since once I had an Infectious abcess in my glute (it needed draining & several doc visits) when I pinned there several years ago because I used only a 1 inch needle in the meaty area which probably needed a 1.5 in. needle and I higher quality gear instead of the inexpensive Test E. from Eastern Europe which was probably inexpensive for a reason: Its quality was poor / cheap

Heart of the Question: This time the cough is 7 days, a lot longer, what's the deal here is it because of the lump in the pec that's gone away after heat and rubbing meant the juice didn't get deposited fully intra muscular and the oil is causing me to cough?

Thanks in advance for any constructive help, I tried to make this question, short and efficient