Hi, I use salonpas last week because of my right shoulder pain and before using salonpas I consilted my doctor and said that i can use it. I was 16 weeks pregnant last week and I use salonpas, 1 patch the whole night of the day of my consultation to the dr. And another one the next day but that night was painful... my tummy started to have cramps and was really hurting me and so my husband told me not to use the patch anymote so i took them off that night when i was feeling pain until i finally fell asleep crying for the pain... maybe i just want to know if my baby is safe and if that cramps causes the salonpas or not...