I'm married, my husband did a vasectomy and I was with another ...

I've been married for 7 years and my husband did a vasectomy 2 years ago, I was with someone else 4 and a half months ago. I menstruated after staying with him. I am now 2 months pregnant. Are you likely to be my husband's? Since now, grateful!!!
Expert answer:

If you are pregnant for 2 months (proven by ultrasound) and have had intercourse with each other for more than 4 months then this child can only be from your husband.