confused and overthinking

Alvinaashraf
Help everyone plz can anyone help me  I had. Sex with my husband after almost two months as he use to travel a lot and plus I don't want more babies and he also my eldest one is. Sixteen and youngest is five and a half I have three boys and a girl but the thing is I'm also scared of contraceptions so I've decide to control myself and we have agreed to have sex on the safest days and he takes care last night we had sex he did went inside but not completely and got wet completely outside but still I'm scared it was my nineteenth day my cycle is 26-27 day long can anyone help or suggest what shud I do and he left last night for ten days my periods are due in seven days or maybe six plz anyone