Fertility and conception

Jenna

Hey! So my husband and I have been doing natural family planning since are last baby she is 20 months old, he usually withdrawls... now when I got pregnant with my second I had an iud and literally got pregnant the same month I got it taken out. Now I am in my "ovulating week" day 7 now but my husband has came in me like 4 different time before ovulation and during. What do you think my chance of being pregnant are???