Hello and welcome to HCM,
card test is a senstive test.
A positive pregnancy test is confirmatory of pregnancy.
Since, the last menstrual cycle was 4 months back, the period of gestation is 6 weeks.
The medical termination of pregnancy can be safely done at 6 weeks of gestation.
Pregnancy occurs as a result of mating of sperm and ovum.
Inappropriate timing of intercourse will not result in conception and hence pregnancy.
Thanks and take care
Dr Shailja P Wahal