I had sex before 7 months within that I got two times period in Jan and April. if it is implementation bleeding then I would have became pregnant for 6 months by now but not and implementation bleeding doesn't occur more than once.if I was conceived in April the sperm won't wait for 4 months to reach egg as it can survive upto 10 days . if it was then I would have became pregnant for 16 months but my stomach doesn't look like that . am I pregnant ?