I hd my menses on da 1st nov, had sex on da 15, no ejaculation,took the pills on 18..nd had sex again on the 23...no ejaculation..can i get pregnant?

Pregnancy?: If "the pills" were a trial of "Plan B" (birth control pills), they do not always stop a pregnancy. "Day 15" was probably when you ovulated, so pregnancy is possible. Get a serum HCG test in 10 days, which is very accurate.

Depends on : Your cycle,if you ovulated on the 15th ,taking what I assume is the morning iafter pill may not work.Try to get on OC orvIud or vaginal ring as soon as possible.