Not crawling

My daughter just turned 10months on the 30/5 and isnt crawling. I am concerned as one mother said to me it was a sign that may have autism 😢 my son who is 5.5yrs was cruising at this time but didn't walk until 14months and is on the spectrum moderate to low so now i am really worries 😢i love my son and daughter. Asked my gp and said sometimes it can be but not always. So confused, worried 🙁😢. Can some one give some advice & no negative comments. Thanks in advance