How many sachets are you on a day mate? If your face is swelling and nasal passages are swollen stop taking it straight away and get an anti-histamine tab for a week. You should not crash from Testo-Gel I would not have thought but I could be wrong. Reason for me saying you wont crash is such a tiny amount is absorbed....Not like taking say 200ml of Cyp every 7 days so dont worry bud. The AI might increase your low Test anyway.....Could be happy days!