Missed period march and april, took medroxyprogesterone 5mg for 10 days, did not work. last time unprotected sex was march 5, took a b-hcg about 2 month later negative. can i still be pregnant? what if hcg is rising extremely slow due to ectopic ?

Time line you describe is confusing. Assume b-Hcg was 2 WEEKS after last sex on March 5 since we are not 2 MONTHS from that date? Definitely would repeat b-hcg since no period, but if still negative you need a Dr evaluation & possibly an ultrasound. Ectopic pregnancy should produce at least some b-hcg but often causes pain & abnormal bleeding/spotting so not too likely but not out of question