I've ran into a problem with texting and I simply cannot figure out what I'm doing wrong.. I try to keep my texts short, I text the same amount, even less than who I'm talking with, I wait min. the same amount they took to reply, max twice as much. I keep innuendos going (I'm not sure how flirtatious I am, I may be underdoing it, dont wanna seem needy). Conversations seem flowing, then out of nowhere, they seem to just stop, and not respond to whatever I texted even if its a question (nothing offensive or weird). I never question why they've disappeared, I'm not clingy, but it's bothering me, cause it's happening with 4 girls I've been texting with. A few times they may reply in a day, but most of the times it seems to just been abruptly ignored, and never picked up again.. Should I just keep silent until I'm available to meet up in person? How do I pick up then after such an awkward stop (especially after a question..)

Also I'd appreciate tips on picking up again a day or two (or more) later, cause recently I've been traveling around quite a bit and it can take even over a week till I can meet some of these girls in person. Thanks!