I had a withdrawl bleed from the patch. took and kept patch off after week 1. hospital did pregnant test and neg. was it to early? can i be pregnant?

Unprotected sex: At any time always has the chance of becoming a pregnancy, and/or one of many various std's: hpv (which can cause cervical cancer), herpes-no cure, gonorrhea, chlamydia, crab lice, trichomoniasis, even syphilis and chancroid. Using a hormonal birth control is generally a good way to protect against an 18 yr ball ; chain-but condoms are really the only way to protect from the others. Recheck test!