I did my first shot of Test E into my ass last night. When i aspirated, it was hard to pull the plunger back. When i did no blood came in but a pea sized bubble showed up. When i let go of the plunger it didnt suck back up and get rid of the bubble. Im wondering if some air got sucked in where the needle connects to the syringe. Im not real sore. But its kinda scary...